Apple iPhone 7

If mobile data usage for iCloud Drive is turned on, your phone will use mobile data when it exchanges data with iCloud Drive and is not connected to a Wi-Fi-network.

Solution: Synchronise the phone contents using iCloud

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Step 1 of 9

Step 1 of 9

1. Find "iCloud"

Press Settings.

1. Press Settings.
2. Press your Apple ID.
3. Press iCloud.
4. Press the indicator next to "iCloud Drive" to turn file synchronisation on or off.
   If you turn on file synchronisation, your files are automatically synchronised via Wi-Fi.
5. Press Photos.
6. Press the indicator next to "Upload to My Photo Stream" to turn the function on or off.
   If you turn on the function, all new pictures on your phone are synchronised with other devices via iCloud.
7. Press arrow left.
8. Press the indicator next to the required data type to turn synchronisation on or off.
9. Press the Home key to return to the home screen.

If automatic update of apps via mobile network is turned on, your phone will use mobile data.

Solution: Turn automatic update of apps on or off

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Step 1 of 5

Step 1 of 5

1. Find "iTunes & App Store"

Press Settings.

1. Press Settings.
2. Press iTunes & App Store.
3. Press the indicator next to "Updates" to turn the function on or off.
   If you turn on automatic update, your apps are automatically updated via Wi-Fi.
4. Press the indicator next to "Use Mobile Data" to turn the function on or off.
   If you turn on automatic update of apps via mobile network, your apps are automatically updated via the mobile network when no Wi-Fi networks are within range.
5. Press the Home key to return to the home screen.

If mobile data usage for applications is turned on, the applications will use mobile data when your phone is not connected to a Wi-Fi network.

Solution: Turn mobile data on or off

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Step 1 of 5

Step 1 of 5

1. Find "Mobile Data"

Press Settings.

1. Press Settings.
2. Press Mobile Data.
3. Press the indicator next to "Mobile Data" to turn the function on or off.
4. Press the indicator next to the required application to turn the function on or off.
5. Press the Home key to return to the home screen.

If Wi-Fi Assist is turned on, your phone will use mobile data when the connection to the Wi-Fi network is poor.

Solution: Turn Wi-Fi Assist on or off

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Step 1 of 4

Step 1 of 4

1. Find "Mobile Data"

Press Settings.

1. Press Settings.
2. Press Mobile Data.
3. Press the indicator next to "Wi-Fi Assist" to turn the function on or off.
4. Press the Home key to return to the home screen.

If notifications are turned on, your phone will use mobile data when applications send push notifications and is not connected to a Wi-Fi-network.

Solution: Use push notifications

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Step 1 of 13

Step 1 of 13

1. Find "Notifications"

Press Settings.

1. Press Settings.
2. Press Notifications.
3. Press Show Previews.
4. To select notification preview on the lock screen, press Always.
5. To select notification preview only when your phone is unlocked, press When Unlocked.
6. To turn off notification preview, press Never.
7. Press arrow left.
8. Press the required application.
9. Press the indicator next to "Allow Notifications" to turn push notifications for the selected application on or off.
10. Press the Home key to return to the home screen.
11. Slide your finger downwards starting from the top of the screen.
12. Press the required push notification and follow the instructions on the screen to use the selected function.
13. Press the Home key to return to the home screen.

When background refresh of apps is turned on, some apps will still be able to check for content updates, even if you end them from the list of running applications, and therefore use mobile data.

Solution: Select settings for background refresh of apps

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Step 1 of 10

Step 1 of 10

1. Find "Background App Refresh"

Press Settings.

1. Press Settings.
2. Press General.
3. Press Background App Refresh.
4. Press Background App Refresh.
5. To turn off background refresh of apps, press Off.
6. To turn on background refresh of apps using Wi-Fi, press Wi-Fi.
   If you turn on background refresh of apps using Wi-Fi, app content will be updated when a Wi-Fi connection is established.
7. To turn on background refresh of apps using mobile network, press Wi-Fi & Mobile Data.
   If you turn on background refresh of apps using mobile network, app content will be updated using mobile network when no Wi-Fi networks are within range.
8. Press arrow left.
9. Press the indicator next to the required app to turn the function on or off.
10. Press the Home key to return to the home screen.